I have noticed that I get depleted also. But then I do a heavy duty cleansing with coffee enema afterwards. I personally do take two Emergen-C packets which contain electrolytes, after the cleanse. I already takes tons of supplements. I also am sure to include some live acidophilus yogurt in my enema bag (you really get tons more stones out with a coffee enema, and keep the stones from doing any harm in the intestines) and eat some of the yogurt.
Nevertheless, I feel very depleted also!
This doesn't worry me. I just eat normally after the flush and enema and rest up. The next day I feel pretty good. Best to do the cleanse on a day when you don't have to do much, maybe on a Sunday. Take it easy, read, and don't worry! And give your body at least 2 weeks to recover. :-)